Answer:
x = 34
Step-by-step explanation:
ΔABD and ΔBCD are both isosceles triangles
In ΔABD
AB =AD, hence ∠ABD = ∠ADB ( base angles are equal )
∠ABD =
=
= 68°
∠DBC = 180° - 68° = 112° ( straight angle )
∠BCD = x =
=
= 34
Answer:
1st:

2nd:

3rd:

Step-by-step explanation:
Graph all of them and see which ones cross the x- axis at the same points.
Answer:neither
Step-by-step explanation:
There is no ratio to multiply by or number to add
3a-7=-4b+1
3a-8=4b
(3a/4)-2=b
Answer:
X=9
Step-by-step explanation:
2x-7=11
Add 7 each side
2x - 7 +7 =11 + 7
2x=18
Divide by 2 each side
2x/2=18/2
x=9